package com.itheima.controller;


import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.util.List;
import java.util.UUID;

@Controller
@RequestMapping("/user")
public class UserController {

    /**
     * 跨服器的文件上传
     * @return
     */
    @RequestMapping("/fileupload3")
    public String fileupload3(MultipartFile upload) throws Exception {
        System.out.println("fileupload3.....跨服器的文件上传执行了");
        //定一个上传文件的服务器路径
        String path = "http://localhost:9090/uploads/";

        //说明上传文件项
        //获取上传文件的名字
        String filename = upload.getOriginalFilename();
        //把文件名字设置称为唯一值
        String uuid = UUID.randomUUID().toString().replace("-","");
        filename = uuid+"_"+filename;
        //完成文件上传,跨服器上传
        //创建客服端对象
        Client client = Client.create();

        //和图片服务器连接
        WebResource webResource = client.resource(path+filename);
        //上传文件
        webResource.put(upload.getBytes());

        return "success";
    }
    /**
     * 文件上传
     * @return
     */
    /**
     * SpringMVC文件上传
     * @return
     */
    @RequestMapping("/fileupload2")
    public String fileupload2(HttpServletRequest request, MultipartFile upload) throws Exception {
        System.out.println("fileupload2.....执行了");

        //使用fileupload组件完成文件上传
        //上传位置
        String path = request.getSession().getServletContext().getRealPath("/uploads/");
        //判断，该路径是否存在
        File file = new File(path);
        if(!file.exists()){
            //创建该文件夹
            file.mkdirs();
        }
        //说明上传文件项
        //获取上传文件的名字
        String filename = upload.getOriginalFilename();
        //把文件名字设置称为唯一值
        String uuid = UUID.randomUUID().toString().replace("-","");
        filename = uuid+"_"+filename;
        //完成文件上传
        upload.transferTo(new File(path,filename));

        return "success";
    }
    /**
     * 文件上传
     * @return
     */
    @RequestMapping("/fileupload1")
    public String fileupload1(HttpServletRequest request) throws Exception {
        System.out.println("fileupload1.....执行了");

        //使用fileupload组件完成文件上传
        //上传位置
        String path = request.getSession().getServletContext().getRealPath("/uploads/");
        //判断，该路径是否存在
        File file = new File(path);
        if(!file.exists()){
            //创建该文件夹
            file.mkdirs();
        }

        //解析request对象，获取上传文件项
        DiskFileItemFactory factory = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(factory);

        //解析request
        List<FileItem> items = upload.parseRequest(request);

        //遍历
        for (FileItem item : items) {
            //进行判断，当前的item是否是上传文件项
            if (item.isFormField()){
                //说明普通表单项

            }else{
                //说明上传文件项
                //获取上传文件的名字
                String filename = item.getName();
                //完成文件上传
                item.write(new File(path,filename));
                //删除临时文件
                item.delete();
            }
        }
        return "success";
    }

}
